PlzNavigate: Attempt to fix blink layout tests which fail due to duplicate output from WebFrameClie…

content/public/test/layouttest_support.h

Index: content/public/test/layouttest_support.h
diff --git a/content/public/test/layouttest_support.h b/content/public/test/layouttest_support.h
index 074270b9a450880e6037b427e7ab44a3cbcb0d38..f23eafb34621394744ac5f3828ebfa390830d2b2 100644
--- a/content/public/test/layouttest_support.h
+++ b/content/public/test/layouttest_support.h
@@ -23,6 +23,7 @@ class WebDeviceOrientationData;
 class WebInputEvent;
 class WebLocalFrame;
 struct WebSize;
+class WebURLRequest;
 class WebView;
 class WebWidget;
 class WebURLResponse;
@@ -176,6 +177,11 @@ void SchedulerRunIdleTasks(const base::Closure& callback);
 // TextInputState.
 void ForceTextInputStateUpdateForRenderFrame(RenderFrame* render_frame);
 
+// PlzNavigate
+// Returns true if the navigation identified by the |request| was initiated by
+// the browser or renderer.
+bool IsNavigationInitiatedByRenderer(const blink::WebURLRequest& request);
+
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_TEST_LAYOUTTEST_SUPPORT_H_